Photon trajectory beyond the critical impact parameter

Abstract: When a highly energetic particle traverses a black hole experiences a time delay and angular deflection, which combine easily to produce a standard phase shift for scattering off a very massive particle. The picture drastically changes when the impact parameter attains values beyond a critical one; then the phase shift acquires a small imaginary part, indicating inelastic scattering. What happens to the original time delay and deflection quantities?Do their complex valued counterparts for impact parameters beyond the photosphere make sense? We will investigate this question in the context of an AdS black hole and the dual CFT description.

general relativity and quantum cosmologyHEP - experimentHEP - latticeHEP - phenomenologyHEP - theory

Audience: researchers in the topic

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